Key developments Friday concerning severe acute respiratory syndrome:

_ China's president called for a ``people's war'' against SARS as the government imposed travel restrictions on university students and migrant workers to keep the virus from spreading.

_ Taiwan reported nine new infections, raising the total number of cases to 98, including three deaths.

_ In Malaysia, 60 more patients and staff were quarantined at two hospitals feared to be sites of a SARS outbreak.

_ Doctors have found the SARS virus can remain in recovered patients for at least a month, and have urged patients to avoid personal contact such as hugging and kissing when they go home.

_ Vietnam's state-owned airline slashed fares by 20 percent to attract travelers after the World Health Organization declared the country was the first to contain SARS.

_ The global death toll rose to 405, with at least 5,900 cases reported in more than 20 countries.